Space by the bar screen, rotor, back plate and chain curtain composed called the first impact area of impact crusher; the space between the rotor and the back plate is composed of the second impact area. Material impact on the first impact zone and crushed each other, and then again into the second impact zone again by the impact crushed. The crushed material through the lower part of the housing discharge port unloading.

In recent years, with the rapid development of Raymond mill equipment, mining industry has shown great prosperity. With the continuous improvement of milling technology, the fineness of ground materials can reach the more fine